Center stop mechanism for full-fashioned knitting machines



Mar. 3, 125. 15,358

. M. ZWICKY CENTER STOP MECHANISM FOR FULL FASHIONED KNITTING MACHINESFiled A112. 22, 1924 Patented M... 3, 192 5. .UNITED- STATES I p1,528,358 PATENT OFFICE.

.unncmon zwIoxY, or srnme rownsnrr, snnxs COUNTY, rnnnsrnvama, AS-

srenon TO TEXTILE MACHINE worms,v or WYOMISSING, rENNsYLvAmm-AcomPORATION OF PENNSYLVANIA.

CENTER. s'ror mncnamsm ron ronn-rasmonnn KNITTING rraonnms.

. App1ication filed August 22, 1924. serial It'd-733,492.

' i To all whom it may concern:

Be it known that I, Mnncmon ZwIoKY, a c1t1zen' of-the United States,residing at SpringTownship, in the county of Berks.

.5 and Statef of l ennsylv'air'i'ia, have -invented certain new anduseful Improvements in Center Stop Mechanism for Full-Fashioned KnittingMachines, of which the'following is a specification.-

My invention relatesqto yarn feed 'mechanism for full-fashioned knittinmachines, and particularly to stop mechanism for limiting the travel ofthe reciprocatively operated yarn-carrier-rods commonly employed insuch-machines.

These yarn-carrier rods are commonly reciprocated through afriction-boxmechanism' and controlled by screw-actuated stop devices arranged" tocontact, with the ends of the rods -or it may be with stop lugs securedto the latter; such known, mechanism being indicated in J anssen-ZwickyPatent No. 1,079,915 of Nov- 1913, in connection with-twhich my presentinvention may be -35 employed, and the latter oonsistin'gmerely in animproved supplemental stop mechanism intermedi ately operativeupon theyarn carrierrods .to ermit of most conveniently efiecting desiredlimitation of the movement of any one ormore of them, as fully set forthin connection with the accom anying 7 drawing and clearly defined in theaims.

Fig. 1 is a fragmentary cross-sectional viewof'a full-fashioned knittingmachine showing. my improved su plemental stop;

mechamsm ap ied tothe ame thereof in a cooperative re ation to .theintermedlat ely supported yarn-carrier rode; the controllln screw andend stop mechanisms for, re s as commonly employed and l indicated in lPatent No. 1,079,915referred to, ted as unnecessary toa 'full 'unde ofthepresent improvement. 1

Fig. 2 isa cross sectional view on thelme 22of Fig.1, looking in thedirection of the arrow 2; one stop e reversely arranged stoleverbeingshown as only partially-raise to the uprlght position in whichthe levers are naturally sup-- ported when inoperative,

Figs. v3. and 4 are separate perspective views of the stop-carrier headand a stop lever respectively.

ver being shown in the corresponding rod 1 indicates a series of sevenyarncarrier rods 5, 5, 5, an end one'5 of which may carry the main yarnwhile any one. or more of the others may be used 'for addi-- tionalyarn-to be fed tocertain needles only ;as determinedby means whichcorrespond-' ingly limit their feed movement. The drawing merelyindicates midway portions of these rods, engaged insepar'ate guidewaysof a supporting bracket'lO of which a series are commonlyfixedto'the machine frame '11; each rod being provided with a suitablethread guide 12 adapted to lay its thread upon sinkers 13. As reviouslystated description of the operatlon of the reciprocating and end-stopmechanisms commonly em ployed'and indicated in our priorpatentmentioned, is unnecessary to the understand-.

ing of my improved'supplemental stop mechpose. "Fixed to the machineframe-11, between .anis'in now set forth and which is o era'tive' -on .lupon stop lugs 15, 15 secure to the m1 way portions of the-rods. -forsuch pur two rod-supporting brackets 10 is a special stop-lever'braoket20,-having a'. lever-carry- 1ng head 21 which overhangs the series'ofrods and is spaced above the latterso as to ermit free passing of thestop lugs-15';

his head is formed with,supporting ears 21",21? fora pivot axle 22 whichextends crosswiseof the rods 5 midwa of the width of the'head; and uponthis ax e is ivoted a series of stop-levers 25, 25, 25 for t e severalyarn-carrier rods 5. Eachof these levers is L-shaped'? as shown, havinga pivot member apertured for mounting upon'the pivot axle adapted tointo contact with either latter so as tobe engaged by a stop lug 15 on-'the corresponding'rod 5 forstopping the atter;,sa

movementoi the id de en m'gportion being provided with an a 1ustablecon- .tact 25" as indicated, to permit of accurately regulating suollstoppage, 'andia handle 25 operative lowered position; and the similarbeing provided; forconveniently operating each lever.

required; it understood 22 and a right-angled stop member 25"-teamdiately secured thereto, a

tion of each sto lug 15 on its rod ,afi'ectsthe, movement 0 the latterin one direction only without aifecting the limitation to its reversemovement provided for by the usual end-stop mechanism; and that anyselected rod .may be utilized for a desired purpose as found preferable.

What'I claim is i 1. In a full fashioned knitting machine having a yarnfeed mechanism comprising a series of reciprocatively operated yarncarrier rods; an intermediate sto mechanism for said rods comprising stoiilgs intermcbracket having a stop-carrier head spacedlyoverhanging-saidseries of rods and pro-.

vided with a pivot axle extending transversely of the atter, and aseries of stop levers pivotally mounted on said axle to severally swingthereon into or out of lug-errgaging position,

2. In a full fashioned knitting machine having a yarn feed mechanismcomprising a" series of reciprocatively operated yarn car- 0 l l I 0 norrods; an intermediate stop mechanism for said rods comprising stop lugsintermediately secured thereto, a fixed stop-lever xed stop-lever"bracket having a stop-carrier bracket having a stop-carrier headspacedly overhanging said series of rods and provided with .a pivot axleextending transversely of the latter, and a series of stop leverspivotally mounted on said axle to severally;

series of reciprocatively operated yarn carrier rods; an intermediatesto for said rods comprising sto diately secured thereto, a

mechanism 1 ugs intermexcd stop-lever head spacedl'y overhanging saidseries of rods and provided with a pivot] axle extending transversely ofthe latter midway of the width of the head, and a series of L-sha edstop levers pi'votall swing t eir stop members into contact with eitherside'of said head; the extremities of said contacted stop membersdepending bclow the latter to engage said lugs.

In testimony whereof I aflix my signature.

MELCHIOR. ZWIGKY.

mounted on said ax e to severally,

